FORBES - Apr 8 - Dating app Flutter is seeing a surge in usage since the emergence of the Coronavirus. Usable for only six hours on a Sunday, Flutter wants its users to schedule, prepare and focus on their online dating. The app works at limited set times, with matches and messages disappearing at midnight. If two would-be daters don't act within the app's six-hour window to establish real contact outside Flutter, the connection is gone. "With the quarantine, we have seen a 23% increase in weekly users, a 53% increase in weekly matches and a 78% increase in weekly messages," says the app co-founder and COO Teddy Jungreis.